The Shaft,shouldered, cataloged under National Stock Number 3040-01-383-5253, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-383-5253 |
| Primary Part Number | 211052706 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES |
| Step Quantity | 3 |
| First End Diameter | 0.9992 INCHES MINIMUM AND 0.9997 INCHES MAXIMUM IN |
| Second End Diameter | 0.9970 INCHES MINIMUM AND 0.9980 INCHES MAXIMUM IN |
| Largest Step Diameter | 1.812 INCHES NOMINAL IN |
| Second End Spline Minor Diameter | 0.8490 INCHES MINIMUM AND 0.8540 INCHES MAXIMUM IN |
| First End Style | PLAIN |
| Second End Spline Major Diameter | 0.9970 INCHES MINIMUM AND 0.9980 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5622 TY 1 COND-H1075 ASSN STD SINGLE MATERIAL RESPONSE |
| End Similarity | NOT IDENTICAL |
| Second End Spline Quantity | 10 |
| Second End Style | SPLINED (STRAIGHT) |
| Material | STEEL CORROSION RESISTING |
| Second End Spline Length | 1.750 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 211052706 PRIMARY | Naval Sea Systems Command (USA) |
| 801-6406709 | Naval Sea Systems Command (USA) |
| 801-6406709-55 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 6406709 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3040-01-383-5253 is a Shaft,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-383-5253 has 3 manufacturer part numbers on file: 211052706 (Naval Sea Systems Command), 801-6406709 (Naval Sea Systems Command), 801-6406709-55 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 3020-01-383-5531. Verify interchangeability with system specifications before substitution.
Key specifications for 211052706: Surface Finish: 32.0 MICROINCHES; Step Quantity: 3; First End Diameter: 0.9992 INCHES MINIMUM AND 0.9997 INCHES MAXIMUM IN; Second End Diameter: 0.9970 INCHES MINIMUM AND 0.9980 INCHES MAXIMUM IN. 14 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.